Intersample Modeling of the Converter Output Admittance
Loading...
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Other link related to publication
View publication in the Research portal
View/Open full text file from the Research portal
Other link related to publication
Date
2021-11
Major/Subject
Mcode
Degree programme
Language
en
Pages
11
Series
IEEE Transactions on Industrial Electronics
Abstract
The stability of the converter-grid interconnection can be studied by analyzing the product of the converter output admittance and the grid impedance. For reliable stability analysis, it has been of interest to obtain accurate converter output admittance models for a wide range of frequencies, ideally also around and above the Nyquist frequency of the converter system. This article presents a modeling method for the output admittance of power converters defined in the Laplace domain that takes into account the discrete nature of the control system. The modeling method is based on analyzing the intersample behavior of sampled-data systems, a class of systems that includes the modern digitally controlled power converters. The proposed method is compared to conventional admittance modeling methods, and its accuracy is validated by means of simulations and experiments.Description
Keywords
Admittamce modeling, Nyquist frequency, Power converter, Sample-data system
Other note
Citation
Pirsto, V, Kukkola, J, Hinkkanen, M & Harnefors, L 2021, ' Intersample Modeling of the Converter Output Admittance ', IEEE Transactions on Industrial Electronics, vol. 68, no. 11, 9222485, pp. 11348-11358 . https://doi.org/10.1109/TIE.2020.3029482
